What it means is that you can no longer update from Windows 7/8/8.1 to Windows 10 or 11. Windows Ends Installation Path for Free Windows 7/8 Upgrade Microsoft's free upgrade offer for Windows 10 / ...
Compared to the pace of Windows 7 and 8 users transferring over to Windows ... I say that because there was no mention of any time limit for the Windows 11 free upgrade anywhere in the body ...